Truss-bridge



J. H. STONE. TRUSS BRIDGE.

(No Model.)

No. 484,686. Patented Oct. 18, 1892.

co., mow-mum, WASHXNGTUN u c UNITED STATES PATENT OFFICE.

JOEL H. STONE, OF DALLAS OITY, ILLINOIS.

TRUSS-BRIDGE.

SPECIFICATION forming part of Letters Patent No. 484,686, dated October18, 1892.

" Application filed January 20, 1892. Serial No. 418,676- (No model.)

To all whom it may concern.-

Be it known thatI, JOEL H. STONE, acitizen of the United States,residing at Dallas City, in the county of Hancock and State of Illinois,have invented certain new and useful Improvements in Truss-Bridges; andI do hereby declare the following to be afull, clear, and exactdescription of the invention, such as will enable others skilled in theart to which it appertains to make and use the same.

The special object of the invention is to make a truss-bridge in whichthe strain will be equally distributed on the truss, no matter where oron what part of the bridge the weight may be.

Figure 1 is an elevation of the truss-bridge which I have invented.Figs. 2, 3, and 4 are detail views.

In the drawings, A represents a truss-brace formed of two pieces oftimber bolted together and provided with apacking-washer between them.It is set at theheel against a cast-iron shoe a to prevent decay in thetimber by the terminal contact of two pieces of wood.

B are the upper chords, consisting of two pieces of timber bolted andintermediately packed like the braces A.

O are the wooden posts which form a support from the floor-beam to theupper chord.

E are chord-rods passing through the braceshoes CL and held thereto bybolt threads and nuts, so as to form a tie for the truss and passthrough or over the floor-beams O.

F are oblique rods passing through and bolted to the double truss at theshoulder O by means of the plate f. At their lower-ends the rods F areheld by a hook fastening them to a plate f, passing under thefloor-beam. To these plates f are also hooked the lower ends of theoblique rods G, which are connected at the upper end with the oppositetruss-shoulder O.

H are oblique rods, which are connected with the posts 0 at their upperends. They are also connected With the vertical rods Lby both sets ofrods being connected with the floor-beams 0' independently. The upperends of rods F, G, and L pass through the truss-beam, while the platesserve as a covering for the joints, and the lower ends of the verticalrods L connect at the floor-beams with the chord-rod E and spread apartin the floor-beam, so as to brace the truss as well as support thefloor-beam. One of the chords E passes over the floor-beams and theother through them.

Having thus described all that is necessary to a full understanding ofmy invention, what I claim as new, and desire to protect by LettersPatent, is

The diagonal rods F G and the plates f f combined, as shown, with thebraces A, chords B, posts 0, and floor-beams O, for the purpose setforth.

In testimony whereof I, JOEL I-I. STONE, aflix my signature in presenceof two witnesses.

JOEL H. STONE.

Witnesses:

WM. H. WALTER, J AMES MCKINNY.

